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lllglll N. PETERS. FhowLiAhogmphor. washington, uc.

Unteren STATES PATENT Ormea..

CHARLES GORTO, OF ALBANY, NEYV YORK.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 255,107, dated March21, 1882.

Application tiled October 13, 1881. (No model.)

To all whom it may concern Be it known that I, CHAnLEs GoRToN, of thecity and county of Albany, and State of New York, have invented certainnew and useful Improvements -in Steam Generators, of which the followingis a specieation.

This ,invention relates to that class of boily ers known as magazinebase-burning` boilers,77 and has for its object simplicity inconstruction, cheapness of first cost-,and readiness of repair. Itsobject is also economy of fuel, enlarged heating-surface, thoroughcirculation of the water, and complete safety.

It consists in constructing the combustioncharnber somewhat in the shapeof the frustum of a cone, and in such manner that a cylindricalwater-chamber inclosing a feed-magazine forms the apex thereof.

It further consists in forming an outer cylindrical water-space of twovparallel walls or shells for a portion of their length, the inner shellflaring from a point near the lower end ofthe inner chamber outwarduntil it meets the outer shell, to which it ,isjoined,in 'combinationwith said inner chamber, and in such manner that an annular dame-spaceis formed between said inner and outer independent water-chambers, andalso the before-described conical combustion-chamber.

. It further consists, in combination with the said inner and outerwater-chambers and the conical combustion-chamber, ot'horizontal andvertical detlectin g-partitions, wherebyT the pro= ducts of combustionare first made to take an upward course through the annular chamberbetween the concentric independent .waterchambers, then horizontallyacross one-half of the top of the structure, then down a semicylindricaliiue to a point near thc bottom thereof, and then ascending anothersemicylindrical flue to the uptake or chimney, said semi-cylindricalflues forming ajacket for the outer cylindrical portion ofthe boiler.Soit will be seen that the products of combustion pass overtheheating-surface of the generator three consecutive times before theyescape to the atmosphere.

It finally consists in circulating` connectingpipes`and other details ofconstruction, which will hereinafter be more fully described.

Referring more particularly to the accompanying drawings, and to theletters of reference marked thereon, Figure l represents a perspectiveelevation of my improved boiler, a portion of all the shells beingbroken away for the purpose of showing the internal arrangement of theparts. Fig. 2 illustrates a vertical transverse section of the same,clearly showing the conical combustion-chamber, thepeculiararrangemeutof the fuel-magazine,the annular dame-flue, and themode of connecting the inner andeuter water chambers. Fig. 3 shows across-section'on the line 11, Fig. 2; and Fig. 4, a verticallongitudinal section of a relief vacuum-valve.

Like letters of reference indicate like parts in all the figures.

A shows the outer cylindrical water-chamber, formed of one long` sheet,b, on the outside, a shorter shell, a, on the inside, and a coneshapedshell, b, forming'the bot-tom thereof. Y

The shell b is united or riveted in any wellknown manner to the shells bb. This conical shell or bottom forms the sides of thecombustion-chamber. One-half of the inner shell,

a, of the outer water-chamber projects above.

the steam-space of said chamber, as seen at m, Fig. 2,and forms aportion of the horizontal partition F of the smoke-chamber. Acontinuation of this partition across the top of the boiler runs fromthe said projection and joins the iiange of the uptake, as seen at n,Figs. 2 and 3, in dotted lines, and also in full lines at n, Fig. 2.This partition F' extends over the top of the boiler, and extendscentrally down the side to near its bottom, as may be seen'in dottedlines on Fig. l, and the same 011 the opposite side, the purpose ofwhich will be described hereinafter. Y

Referring to the central or inner water-chamber, which is composed oftwo annular shells, one fitting within the other, but far enough apartto form a narrow space, A', the inner shell ofthe inner chamber isflaring at its upper and lower ends, the top for the ready reception ofthe fuel, andthe bottom for the ready delivery of the same.

The two cylindrical water-chambers are connected by means of hollowstay-bolts or thimbles below the water-line, and at the top by means ofa bent steam-pipe. These hollow stay-bolts perform av double function-i.e.,

that of staying the parts and providing for circulation.

The advantage of circulation in asteamgenerator is of the firstimportance, as by a perfect circulation of the water it is preventedfrom being in a quiescent state, which is always deleterious, because itdoes, when at rest, deposit-its sediment or foreign substances upon theshell ot' the boiler. not only subjecting said shell to blister andburn, but preventing tbe transmission ofthe heat of the furnace throughthe plate. When water has a lively circulation it keeps the boiler-plateclean and licks up the heat as it sweeps over the plate, thus causing arapid generation of steam. The boiler being kept clean lasts muchlonger, for the reason that the contact of water with the plate is notimpeded by any scale or sedimentary deposit. Just above the bottom ofthe angular waterspacc I locate my grate-sur face, and below this pointthe outer shell of the outer water-space is continued down to the Hoor.This shell forms the ash-pit and prevents falling coals from scatteringover the tioor or outside ofthe shell of the boiler, thus avoiding alldanger from tire. On one side of the lower portion of this shell Iarrange my tiredoor I. This door is adapted to be regulated for theproper supply of air to the furnace, and upon the top ot' the shell orjacket is located acast-iron top, having an annulus which snugly titsthe shell. This casting C is provided with a central opening to which isfitted a. lid, c. Through this opening the reservoir is supplied withcoal or other fuel, and near one edge of the casting C is anotheropening, o, which is provided with a flange to which the smoke pipe orchimney is attached. The under side of the top casting forms the upperwall ofthe return-smoke tine.

It will be observed that the inner watercharnber extends nearly up tothe t'p casting, so that when the reservoir is being tilled no coals canfall to either side of it. It will be further observed that reservoirfor coal being surrounded with water theie is no danger ot' its burningout, as compared with those made of solid iron, which is a greatdesideratum.

The pipe L, which enters the side ofthe outer 5o jacket and into anddown inside the boiler to near its bottom, is designed for a feed-pipe.I extend this pipe down inside for the purpose of relieving thefeed-water from the chilling effect cold water has when suddenly fedinto the boiler. It is evident, however, that the boiler may be fed fromother points. Steam may be taken ott' by means of pipe M.

Safety-valves, water and steam gages, and other appliances used tosteam-boilers are not shown. Some changes and modifications may be madein this boiler withontdeparting from the spirit of my invention. I donot therefore desire to be contined to the exact construction shown.

Therefore, having described my invention, its construction, andoperation, what I claim as new 1s- 1. The combination, in astcam-generator,of two independent water-chambers coneentricallyarranged, the bottom ot' the outer chamber being angular incross-section, forming a conical combustion-chamber, and the centralwater-chamber forming a fuel-magazine and located at or near the apex ofsaid combustionchamber, in the manner shown and described.

2. The combination, in a steam-generator, consisting of the outerwater-chamber, provded with aconical bottom, forming a conicalcombustion-chamber, of the inner water-chamber located at or near theapex of saidcombustion chamber, and which forms a fuel-magazine, and theannular flame-tine formed by and between the inner and outerwater-chambers, in the manner set forth.

3. The combination,in a steam-generator, ot' the two independentwater-chambers, as described, the combustion-chamber, the annulartiametlue formed between said chambers and terminating at the lower endof the reservoir, and the upper and lower waterconnecting pipes orhollow stay-bolts, constructed and arranged substantially as shown.

4. In a steam-boiler, the combination of the inner and outerwater-chambers, connected as described, and forming theannulariiame-chamber and the conical irebox, a segmental portion of theinner wall ofthe outer chamber projecting above the steam-space, thehorizontal and vertical partition, and the casting G,fo1'm ing the topof the return-smoke tine, all arranged to compel the products ofcombustion to take an up-and-down and return course7 for the purposedescribed.

CHARLES GORTON.

IOO

